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MySQL Tutorial - Key Word Search in Tables

By: FYIcenter.com

(Continued from previous topic...)

How To Perform Key Word Search in Tables?

The simplest way to perform key word search is to use the SELECT statement with a LIKE operator in the WHERE clause. The LIKE operator allows you to match a text field with a keyword pattern specified as '%keyword%', where (%) represents any number of any characters. Any single quote (') in the keyword needs to be protected by replacing them with two single quotes (''). The tutorial exercise below shows you how to search for records whose "notes" contains "e":

<?php
  include "mysql_connection.php";

  $key = "e";
  $key = str_replace("'", "''", $key);
  $sql = "SELECT id, url, notes FROM fyi_links"
    . " WHERE notes LIKE '%".$key."%'";
  $rs = mysql_query($sql, $con);
  while ($row = mysql_fetch_assoc($rs)) {
    print($row['id'].", ".$row['url'].", "
    . $row['notes']."\n");
  }
  mysql_free_result($rs);

  mysql_close($con); 
?>

If you run this script, you will get something like this:

102, dba.fyicenter.com, Nice site.
202, www.yahoo.com, It's another search engine!
301, netscape.com, Added long time ago!
302, myspace.com, Added today!

(Continued on next topic...)

  1. How To Create a New Table?
  2. How To Get the Number of Rows Selected or Affected by a SQL Statement?
  3. How To Insert Data into an Existing Table?
  4. How To Fix the INSERT Command Denied Error?
  5. How To Insert Multiple Rows with a SELECT Statement?
  6. What Is a Result Set Object?
  7. How To Query Tables and Loop through the Returning Rows?
  8. How To Break Query Output into Pages?
  9. How To Update Existing Rows in a Table?
  10. How To Delete Existing Rows in a Table?
  11. How To Quote Text Values in SQL Statements?
  12. How To Quote Date and Time Values in SQL Statements?
  13. How To Display a Past Time in Days, Hours and Minutes?
  14. How To Perform Key Word Search in Tables?
  15. How To Build WHERE Criteria with Web Form Search Fields?
  16. How To Query Multiple Tables Jointly?
  17. How To Define the ID Column as Auto-Incremented?
  18. How To Get the Last ID Assigned by MySQL?

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